msm: timer: Add ARM generic timer support

Add new timer node in the device tree that the timer initialization
routine uses to register the timer.

Update makefile to use ARM generic timer if CONFIG_ARM_ARCH_TIMER
is turned on.

Change-Id: I422a02b47e42902e26d8ee31da857138235780c4
Signed-off-by: Sathish Ambley <sambley@codeaurora.org>
diff --git a/arch/arm/boot/dts/msmcopper.dts b/arch/arm/boot/dts/msmcopper.dts
index 69de152..6561c71 100644
--- a/arch/arm/boot/dts/msmcopper.dts
+++ b/arch/arm/boot/dts/msmcopper.dts
@@ -15,6 +15,11 @@
 		      <0xF9002000 0x1000>;
 	};
 
+	timer {
+		compatible = "qcom,msm-qtimer";
+		interrupts = <18>;
+	};
+
 	serial@F991F000 {
 		compatible = "qcom,msm-lsuart-v14";
 		reg = <0xF991F000 0x1000>;